Add a wizard allowing to set a carrier and its options on a selection

of picking dispatches, so on all the pickings of the dispatches.
Add a warning on the wizard
Update translations
Rename 'pickings' to 'delivery orders'
Better variable name, work with dispatches, not pickings
Too long line
Merge remote-tracking branch 'Guewen/dispatch-onchange-selection' into qo-pending-merge-qa

Conflicts:
	delivery_carrier_label_dispatch/i18n/delivery_carrier_label_dispatch.pot